Laser apparatus for cutting brittle material
US10668561B2 · kind B2 · utility
1Cited by
1References
31Claims
0Family size
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Key dates
| Filing date | Nov 15, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Jul 8, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for cutting brittle material comprises an aspheric focusing lens, an aperture, and a laser-source generating a beam of pulsed laser-radiation. The aspheric lens and the aperture form the beam of pulsed laser-radiation into an elongated focus having a uniform intensity distribution along the optical axis of the aspheric focusing lens. The elongated focus extends through the full thickness of a workpiece made of a brittle material. The workpiece is cut by tracing the optical axis along a cutting line. Each pulse or burst of pulsed laser-radiation creates an extended defect through the full thickness of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.